EP1749067A1 - Konservierungsmittelfreie beschichtungsmittel, verfahren zu deren herstellung und deren verwendung - Google Patents
Konservierungsmittelfreie beschichtungsmittel, verfahren zu deren herstellung und deren verwendungInfo
- Publication number
- EP1749067A1 EP1749067A1 EP05738118A EP05738118A EP1749067A1 EP 1749067 A1 EP1749067 A1 EP 1749067A1 EP 05738118 A EP05738118 A EP 05738118A EP 05738118 A EP05738118 A EP 05738118A EP 1749067 A1 EP1749067 A1 EP 1749067A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating composition
- composition according
- component
- optionally
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
Definitions
- the present invention relates to preservative-free emulsion paints or lacquers which contain improved copolymeric polyvinyl esters as binders.
- preservative-free emulsion paints and other paints can be produced in the form of aqueous preparations which can be used as building protection agents.
- building protection agents such as e.g. Emulsion paints, plasters, fillers and tile adhesives more or less large amounts of preservatives to prevent infestation with microorganisms and to achieve a satisfactory storage stability.
- preservatives known to date in the prior art for example isothiazolinones or formaldehyde releasers, are usually not compatible with allergy sufferers.
- DE-A-100 30 447 describes a preservative-free paint which contains selected proportions of polymer dispersion, pigment or filler, water glass and water.
- Coloring or lacquer formulations are known from RU-C-21 21 486 which contain emulsifier, alkali phosphate, water glass, polysiloxane, pigments or fillers, Contain thickeners and binders.
- DE-A-100 01 831 describes a silicate coating composition containing water glass, organic ammonium compound, filler and optionally polymeric binder.
- DE-A-199 25 412 discloses a silicate-based paint which, in addition to a silicate binder, contains at least one water-soluble organic nitrogen compound as a stabilizer and optionally a water-dispersible or water-soluble binder, for example polyvinyl acetate.
- VAE copolymer dispersions vinyl acetate-ethylene copolymer dispersions
- An object of the present invention is to provide a preservative-free coating composition which is sufficiently stable to saponification and has a long shelf life.
- Another object of the present invention is to provide pigment and / or filler-containing coating compositions which have high pigment volume concentrations (PVC) of at least 60% and which have a high pigment binding capacity.
- PVC pigment volume concentrations
- Another object of the present invention is to provide a preservative-free coating composition which changes its pH and thixotropic behavior as little as possible during storage and in which the formation of odor-forming constituents is largely suppressed.
- Another object of the present invention was to provide a simple and economical process for the preparation of preservative-free coating compositions.
- the invention relates to preservative-free aqueous coating compositions with a pH of at least 10 containing a) at least one strongly basic agent for adjusting the pH, in particular at least one water-soluble silicate, b) at least one emulsion of a copolymer derived from A1) vinyl esters of aliphatic, saturated carboxylic acids with a chain length of C 1 -C4, especially vinyl acetate, A2) alpha-olefins with 2 to 8 C atoms, especially ethylene, and / or A3) vinyl esters of aliphatic, saturated carboxylic acids with a chain length of C 5 - C18, in particular vinyl esters of ⁇ -branched carboxylic acids with 5 to 11 carbon atoms in the acid residue ( ®versatic acids), A4) optionally ethylenically unsaturated monomers containing silane groups, and A5) optionally further comonomers, the sum of components A1, A2 and / or A3 and optionally A4 and / or
- any water-soluble strong base with which the composition can be adjusted to a pH of at least 10 can be used as component a) of the coating composition according to the invention.
- the pH of the composition according to the invention is at least 10, preferably 10.5 to 14 and very particularly preferably 11 to 13.
- water-soluble strong bases of component a) are alkali metal hydroxides, such as lithium, sodium or potassium hydroxide, buffer systems with buffer areas of at least pH 10, such as phosphate buffers with buffer areas of at least pH 10 or aqueous alkali metal hydroxide solutions with amino acids, such as glycine, as a buffer Buffer area of at least 10 act, and in particular water-soluble silicates.
- alkali metal hydroxides such as lithium, sodium or potassium hydroxide
- buffer systems with buffer areas of at least pH 10 such as phosphate buffers with buffer areas of at least pH 10 or aqueous alkali metal hydroxide solutions with amino acids, such as glycine, as a buffer Buffer area of at least 10 act
- amino acids such as glycine
- Preferred component a) is a water-soluble silicate.
- This is typically a water-soluble alkali silicate, for example a lithium, sodium or preferably a potassium silicate.
- the pH values of the aqueous solutions of component a) typically range from 10.0 to 13.5.
- the alkali silicate content is typically 5 to 50% by weight, based on the aqueous solution.
- Component a) used with preference is potassium water glass.
- the proportion of component a) in the coating composition according to the invention is typically up to 5% by weight, preferably 0.5 to 3% by weight, in particular 0.5 to 2.0% by weight, based on the total solids content.
- aqueous copolymeric polyvinyl ester dispersion used according to the invention is notable for high saponification stability at high pH values. Without being bound by theory, it is assumed that initially a Saponification of the polymer particles takes place, resulting in water-insoluble saponification products which then form a protective layer against further saponification.
- copolymers are derived from monomers of types A1, A2 and optionally A4 and / or optionally A5) or A1, A3 and optionally A4 and / or optionally A5) or preferably from monomers of types A1, A2, A3 and optionally A4 and / or possibly A5).
- the vinyl esters A1 of aliphatic saturated carboxylic acids of chain length C1-C4 are vinyl esters of straight-chain or branched aliphatic carboxylic acids, for example vinyl formate, vinyl acetate, vinyl propionate, vinyl butyrate or vinyl isobutyrate. Vinyl acetate is preferred.
- the vinyl esters A1 can also be present in the polyvinyl ester in a combination of two or more of them side by side.
- the proportion of the monomers A1, if appropriate in combination with further comonomers from this group, is 40 to 95% by weight, preferably 50 to 76% by weight, based on the total amount of the monomers used.
- alpha-olefins having 2 to 8 carbon atoms A2 are branched or straight-chain alpha-olefins, for example prop-1-ene, but-1-ene, pent-1-ene, hex-1-ene , Hept-1-ene, oct-1-ene and especially ethylene,
- the proportion of the monomers A2, optionally in combination with further comonomers from this group is 0 to 45% by weight, preferably 5 to 45% by weight, particularly preferably 8 to 25% by weight, very particularly preferably 10 to 20% by weight .-%, based on the total amount of monomers used.
- the vinyl esters A3 of aliphatic saturated carboxylic acids of chain length C 5 -C18 are vinyl esters of straight-chain or preferably branched aliphatic carboxylic acids, for example vinyl esters of ⁇ -branched carboxylic acids with 5 to 11 carbon atoms in the acid residue ( ® Versatic acids), the vinyl esters of pivalic, 2-ethylhexanoic, lauric, palmitic, myristic and stearic acids. Vinyl esters of versatic acids, in particular VeoVa® 9, VeoVa® 10 and VeoVa® 11, are preferred.
- the vinyl esters A3 can also be present in the polyvinyl ester in a combination of two or more of them side by side.
- the proportion of the monomers A3, optionally in combination with other comonomers from this group is 2 to 60% by weight, preferably 2 to 40% by weight, particularly preferably 4 to 30% by weight, very particularly preferably 5 to 25% by weight .-%, based on the total amount of monomers used.
- silanes are vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, vinylmethyldi-n-propoxysilane, vinylmethyldi-isopropoxy-silane, vinylmethyldi-n-butoxysilane, vinylmethyl-di- sec-butoxysilane, vinylmethyl-di-tert-butoxysilane, vinylmethyl-di- (2-methoxyisopropyloxy) silane and vinylmethyl-dioctyloxysilane.
- Silanes of the formula are particularly preferred and where R 1 is a branched or unbranched alkyl radical having 1 to 4 carbon atoms and R 2 is H or CH 3 .
- Examples include ⁇ - (meth) acryloxypropyl-tris- (2-methoxyethoxy) silane, ⁇ - (Meth) acryloxypropyl-tris-methoxy-silane, ⁇ - (meth) acryloxypropyl-tris-ethoxy-silane, ⁇ - (meth) acryloxypropyl-tris-n-propoxy-silane, ⁇ - (meth) acryloxypropyl-tris-iso- propoxy-silane, ⁇ - (meth) acryloxypropyl-tris-butoxy-silane, ⁇ -acryloxypropyl-tris (2-methoxyethoxy) -silane, ⁇ -acryloxypropyl-tris-methoxy-silane, ⁇ -acryloxypropyl-tris-ethoxy-silane , ⁇ -acryloxypropyl-tris-n-propoxy-silane, ⁇ -acryloxypropyl
- the proportion of monomers A4, optionally in combination with other comonomers from this group, is 0.05 to 5% by weight, preferably 0.1 to 2% by weight, based on the total amount of the monomers used.
- silanes such as aminosilanes or epoxysilanes, can be added to the coating agent according to the invention. This can take place during or in particular after the preparation of the copolymer.
- Suitable comonomers from group A5 preferably have at least one stabilizing nonionic or ionic group, preferably one acid group in the molecule, which additionally stabilize the emulsion polymer via polymer-bound functional groups and / or charges.
- Suitable comonomers A5 with stabilizing nonionic groups are, in particular, esters of ethylenically unsaturated aliphatic mono- and / or dicarboxylic acids with polyalkylene glycols, preferably with polyethylene glycols and / or polypropylene glycols, or esters of ethylenically unsaturated carboxylic acids with amino alcohols, such as (meth) acrylic acid esters of amino alcohols, for example of diethylaminoethanol, and / or (meth) acrylic acid ester with dimethylaminoethanol, and (meth) acrylic acid ester with dihydric aliphatic alcohols of chain length C 2 -C 18 , in which only one alcohol group is esterified.
- amides of ethylenically unsaturated carboxylic acids such as amides of acrylic and methacrylic acid and N-methylolamides of acrylic and methacrylic acid and their ethers.
- Another group of these monomers are N-vinylamides, including N-vinyllactams, for example vinylpyrrolidone or N-vinyl-N-methylacetamide.
- Suitable comonomers A5 with stabilizing ionic groups are ethylenically unsaturated carboxylic acids or sulfonic acids which have one or two carboxyl groups or one sulfonic acid group. Instead of the free acids, their salts, preferably alkali or ammonium salts, can also be used.
- Examples include acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, vinyl sulfonic acid, styrene sulfonic acid, half esters of maleinpositioned. Fumaric acid and itaconic acid with monohydric aliphatic saturated alcohols of chain length C ⁇ -C ⁇ and their alkali and ammonium salts or (meth) acrylic acid esters of sulfoalkanols, for example sodium 2-sulfoethyl methacrylate.
- Acrylic acid, methacrylic acid, crotonic acid, itaconic acid and / or vinyl sulfonic acid are particularly preferred.
- any comonomers which do not belong to groups A1, A2, A3 or A4 can be used.
- esters of aliphatic carboxylic acids of chain length C 3 -C12 with unsaturated alcohols of chain length C3-C18 the acrylic acid and methacrylic acid esters of monohydric aliphatic saturated alcohols, vinyl chloride, vinylidene chloride, acrylonitrile and methacrylonitrile, butadiene, isoprene, C9-C16 alpha-olefins , 2-chlorobutadiene, 2,3-dichlorobutadiene, tetrafluoroethylene, styrene, vinyl ether of monohydric aliphatic saturated alcohols of chain length C 1 -C 18 , divinyl and diallyl esters of saturated and unsaturated aliphatic dicarboxylic acids of chain length C 3 -C18, vinyl
- Preferred further comonomers are A5 acrylic acid esters of monohydric aliphatic saturated alcohols with chain length C4-C8 or C-14-C1 6 alpha-olefins or butadiene or ethylenically unsaturated epoxy compounds.
- the amount of the further comonomers A5 which may be present, optionally in combination with further comonomers from this monomer group, is typically up to 10% by weight, preferably up to 8% by weight, based on the total copolymer composition A).
- the comonomers A5 can also be present in the polyvinyl ester in a combination of two or more of them side by side.
- the vinyl ester copolymer emulsions used according to the invention contain at least one protective colloid and / or at least one emulsifier.
- Protective colloid and emulsifier are preferably contained.
- a protective colloid i.e. as a polymeric stabilizer, methyl celluloses, hydroxyethyl and propyl celluloses as well as sodium carboxymethyl cellulose, gelatin, casein, starch, gum arabic, hydroxyethyl starch, sodium alginate, and homo- or copolymer polymers derived from (meth) acrylic acids and / or esters are suitable and N-vinyl amides, including the N-vinyl lactams and / or the water-soluble salts of these homo- or copolymers.
- (meth) acrylic acids are polyacrylic acid and / or polymethacrylic acid.
- N-vinylamides are N-vinylpyrrolidone and N-vinylacetamide.
- the preferred protective colloid is polyvinyl alcohol.
- Suitable polyvinyl alcohol has degrees of hydrolysis of 60 to 100 mol% and viscosities of the 4% aqueous solutions at 20 ° C. of 2-70 mPa * s, in particular 30 to 70 mPa * s.
- the protective colloids mentioned can of course also be used in the form of mixtures.
- the amount of protective colloids used, based on the copolymer b), is typically 0.1 to 15 parts by weight, preferably 0.3 to 1 part by weight.
- Nonionic emulsifiers or combinations of nonionic and ionic emulsifiers are generally used as emulsifiers.
- nonionic emulsifiers are acyl, alkyl, oleyl and alkylaryloxethylates. These products are commercially available, for example, under the names Genapol® or Lutensol®. These include, for example, ethoxylated mono-, di- and tri-alkylphenols (EO degree: 3 to 50, alkyl substituent radical: C 4 to C12) and ethoxylated fatty alcohols (EO degree: 3 to 80; alkyl radical: C ⁇ to C 36 ) , especially C 2 -C 4 fatty alcohol (3-8) ethoxylates, C13C1 5 - oxo alcohol (3-30) ethoxylates, C 6 -C 8 fatty alcohol (11-80) ethoxylates, C 0 -oxo alcohol (3- 11) ethoxylates , Ci 3 -oxoalcohol (3-20) ethoxylates, polyoxyethylene sorbitan monooleate with 20
- Nonionic emulsifiers are typically 0.1 to 10 parts by weight, preferably 0.5 to 5.0%, based on the copolymer A). Mixtures of nonionic emulsifiers can also be used.
- ionic, preferably anionic, stabilizers as co-emulsifiers.
- examples include sodium, potassium and ammonium salts of straight-chain aliphatic carboxylic acids of chain length C12-C20, sodium hydroxyoctadecane sulfonate, sodium, potassium and ammonium salts of Hydrox fatty acids of chain length C1 2 -C 20 and their sulfonation and / or acetylation products, alkyl sulfates, also as triethanolamine salts, alkyl (C ⁇ o-C2o) sulfonates, alkyl (C ⁇ o-C 2 o) -arylsulfonate dimethyl dialkyl (C 8 -Ci 8 ) -ammonium chloride, and their sulfonation products, alkali salts of sulfosuccinic acid esters with aliphatic saturated monohydric alcohols with chain length C
- Mixtures of ionic emulsifiers can also be used.
- the proportion of ionic emulsifiers, based on the total amount of emulsifiers used, is typically 0.1 to 5 parts by weight, preferably 0.5 to 3.0% by weight, based on the copolymer b).
- aqueous copolymeric polyvinyl ester dispersions used according to the invention typically have solids contents of 20 to 70% by weight, preferably 30 to 65% by weight, and particularly preferably 40 to 60% by weight.
- the proportion of component b) in the coating composition according to the invention is typically 5 to 50% by weight, preferably 10 to 50% by weight, particularly preferably 15 to 30% by weight, based on the total solids content.
- the coating agent according to the invention contains pigments and / or fillers as component c). These are fine-particle solids of inorganic or organic nature, which are colored or uncolored.
- pigments are inorganic pigments, such as titanium dioxide, zinc dioxide, zinc sulfide, iron oxides and / or carbon black, or organic pigments. Titanium dioxide is preferred.
- fillers are carbonates such as dolomite, calcite and chalk.
- silicates such as talc, kaolin, china clay and mica.
- Calcium carbonate and mica are preferred.
- the proportion of component c) in the coating composition according to the invention is typically 20 to 95% by weight, preferably 20 to 90% by weight, and particularly preferably 30 to 87% by weight, based on the total solids content.
- the coating compositions according to the invention also contain further additives d) which are conventional per se.
- film-forming aids such as white spirit, Texanol ® , TxiB ® , butyl glycol, butyl diglycol, butyl dipropylene glycol and butyl tripropylene glycol; Plasticizers such as dimethyl phthalate, disobutyl phthalate, diisobutyl adipate, Coasol B ® and Plastilit 3060 ® ; Wetting agents such as AMP 90 ® , TegoWet.280 ® , Fluowet PE ® ; Thickeners, such as polyacrylates or polyurethanes, such as Borchigel L75 ® and Tafigel PUR 60 ® ; Defoamers, eg mineral oil or silicone defoamers; UV protection agents, such as Tinuvin 1130 ® and other additives and auxiliaries, as are customary for the formulation of coating compositions, are used.
- Plasticizers such as dimethyl phthalate, disobutyl phthalate, di
- the proportion of component d) in the coating composition according to the invention can be up to 25% by weight, preferably 2 to 15% by weight, and in particular 5 to 10% by weight, based on the total solids content.
- the use of preservatives can be dispensed with in the compositions according to the invention.
- the minimum film-forming temperature of the coating compositions according to the invention is typically below 25 ° C., preferably below 15 ° C.
- the film-forming temperature can be modified and specifically adjusted by adding known coalescing agents.
- the coating composition according to the invention particularly preferably contains a component b) derived from A1) vinyl acetate, A2) ethylene, A3) vinyl esters of branched aliphatic carboxylic acids having 9 to 11 carbon atoms, optionally monomers A4) which are ethylenically unsaturated and contain silane groups and optionally A5) of ethylenically unsaturated carboxylic acids or two carboxyl groups, ethylenically unsaturated sulfonic acids with a sulfonic acid group or salts thereof, the content of repeating structural units derived from vinyl acetate in the copolymer being 50 to 70% by weight, of ethylene-derived repeating structural units in the copolymer being 15 to 20% by weight of vinyl esters branched aliphatic carboxylic acids with 9 to 11 carbon atoms derived recurring structural units in the copolymer 10 to 40 wt.%, On repeated structure optionally derived from ethylenically unsaturated and silane groups
- This invention furthermore relates to a process for the preparation of the coating compositions according to the invention.
- the invention therefore also relates to a process for the preparation of aqueous coating compositions comprising the mixing of components a), b), optionally c) and optionally d).
- Component b) is typically produced by radical emulsion polymerization. This can be carried out in the batch process, in the feed process, in the combined batch / feed process or in the continuous process.
- the combined batch / feed process or particularly preferably the feed process, with part of the monomers (1 to 15% by weight) usually being initially charged to start the polymerization.
- the monomers can be metered in either together or in separate feeds.
- it can be advantageous to carry out seed polymerization in certain embodiments in order to set specific particle size and distributions.
- Ditertiary butyl peroxide diisopropyl percarbonate, Azoisobutterkladinitnl, acetylcyclohexanesulfonyl peroxide, tertiary butyl perbenzoate, hydrogen peroxide, benzoyl peroxide, cyclohexanone peroxide, Isopropylcumylhydroperoxid, persulfates of potassium, sodium and ammonium, peroxides of even numbered saturated monohydric aliphatic carboxylic acids of chain length C ⁇ -Ci 2, tertiary butyl hydroperoxide,: Suitable free-radical initiators are used, for example , Tertiary butyl peroctoate, bis (3,5,5-trimethyl) hexanoyl peroxide, tertiary butyl perpivalate, hydroperoxypinane, p-methane hydroperoxide.
- the aforementioned compounds can also be used within a redox system, transition metal salts such as iron II salts or other reducing agents also being used.
- Transition metal salts such as iron II salts or other reducing agents also being used.
- water-soluble persulfates in particular ammonium persulfate or sodium persulfate, are preferably used to start the polymerization.
- the protective colloid used for stabilization can likewise either be initially introduced completely at the beginning of the polymerization or partially initially introduced and partially dosed or added completely during the polymerization.
- the emulsifier used for the stabilization can likewise either be initially introduced completely at the beginning of the polymerization or partially initially introduced and partially metered in or completely added during the polymerization.
- the pH of the dispersion is typically between 2 and 7, preferably between 2.5 and 6.
- the polymerization temperature is typically in the range from 20 to 120 ° C., preferably in the range from 30 to 110 ° C. and very particularly preferably in the range from 45 to 95 ° C.
- a further, preferably chemical aftertreatment in particular with redox catalysts, such as, for example, combinations of the abovementioned oxidizing agents and reducing agents, can be connected for demonomerization.
- redox catalysts such as, for example, combinations of the abovementioned oxidizing agents and reducing agents
- demonomerization in particular by physical demonomerization, i.e. H. Removal by distillation (in particular by steam distillation) or by stripping with an inert gas, residual monomer present can be removed.
- a combination of physical and chemical methods is particularly efficient which allows the residual monomers to be reduced to very low contents ( ⁇ 1000 ppm, preferably ⁇ 100 ppm).
- aqueous coating compositions according to the invention are suitable for coating all types of substrates, for example as paints, preferably in the construction sector.
- Atmospheric oxygen was removed from the apparatus and ethylene was forced into the apparatus. 1500 g of vinyl acetate were metered in at 20 bar ethylene pressure. The mixture was heated to an internal temperature of 60 ° C. and the ethylene pressure was increased to 40 bar. 10% of a solution of 27.1 g of Brüggolit C in 2000 g of water were then metered in. 10% of a solution of 27.1 g of t-butyl hydroperoxide in 2000 g of water were then metered in at an internal temperature of 60 ° C. and the mixture was cooled to remove the heat of reaction.
- the polymerization was carried out in the apparatus and by the method of Comparative Example 1, with the modification that the total amount of 34044 g of monomer was replaced by a mixture with different contents of vinyl acetate, VeoValO and ethylene (see Table 1). Specifically, the following amounts (in% based on 34044 g) of monomer were copolymerized:
- the powdery hydroxyethyl cellulose was sprinkled into the water and dissolved with stirring, then dispersant, mineral oil based defoamer and aqueous solution of a quaternary ammonium salt were added with stirring.
- dispersant, mineral oil based defoamer and aqueous solution of a quaternary ammonium salt were added with stirring.
- the pigments and fillers were dispersed in and then, at an increase in the stirring speed to 5000 rpm, further at 5000 rpm. dispersed, the temperature of the pigment / filler paste rising to 60 ° C.
- the mixture was allowed to cool to 30 ° C. With slight stirring, the copolymer dispersion and the aqueous potassium silicate solution were then stirred in.
- the essential characteristics of the different emulsion paints are the pigment binding capacity (WSR), the smell, the thixotropy and the change in pH after heat storage in the emulsion paint prepared according to the above formulation (see Table 3)
- WSR 28d pigment binding capacity after 28 days of storage in a standard atmosphere at room temperature; Specifications in ⁇ m
- Ger 28d smell after 28 days of storage in a standard atmosphere at room temperature; Assessment on a subjective scale from - / - / 0 / + / ++ (very poor to very good)
- Thix 28d thioxotropy after 28 days of storage in a standard atmosphere at room temperature; Assessment on a subjective scale from - / - / 0 / + / ++ (very poor to very good)
- pH 1d RT pH value after storage for 1 day in a standard atmosphere at room temperature
- pH 28d RT pH value after 28 days of storage in a standard atmosphere at room temperature
- pH 28d 50 ° C pH value after 28 days storage in a standard climate at 50 ° C
- pH 1d RT pH value after 1 day storage in a standard atmosphere at room temperature
- pH 28d 50 ° C pH value after 28 days storage in a standard climate at 50 ° C
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004023374A DE102004023374A1 (de) | 2004-05-12 | 2004-05-12 | Konservierungsmittelfreie Beschichtungsmittel, Verfahren zu deren Herstellung und deren Verwendung |
PCT/EP2005/004826 WO2005111158A1 (de) | 2004-05-12 | 2005-05-04 | Konservierungsmittelfreie beschichtungsmittel, verfahren zu deren herstellung und deren verwendung |
Publications (2)
Publication Number | Publication Date |
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EP1749067A1 true EP1749067A1 (de) | 2007-02-07 |
EP1749067B1 EP1749067B1 (de) | 2008-07-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP05738118A Active EP1749067B1 (de) | 2004-05-12 | 2005-05-04 | Konservierungsmittelfreie beschichtungsmittel, verfahren zu deren herstellung und deren verwendung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7789959B2 (de) |
EP (1) | EP1749067B1 (de) |
CN (1) | CN1954039B (de) |
AT (1) | ATE401378T1 (de) |
CA (1) | CA2562856A1 (de) |
DE (2) | DE102004023374A1 (de) |
MX (1) | MXPA06013116A (de) |
WO (1) | WO2005111158A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008155337A1 (de) * | 2007-06-20 | 2008-12-24 | Basf Se | Verfahren zum aufbringen von korrosionsschutzschichten auf metallische oberflächen |
GB0809063D0 (en) | 2008-05-19 | 2008-06-25 | Sun Chemical Ltd | Gas barrier coatings |
EP2154111A1 (de) * | 2008-07-10 | 2010-02-17 | Cognis IP Management GmbH | Wasserlösliche Silikate und deren Verwendung |
DE102009008143A1 (de) | 2009-02-09 | 2010-08-19 | Celanese Emulsions Gmbh | Vinylacetat-Ethylen-Copolymerdispersionen und damit behandelte textile Flächengebilde |
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PL3385338T3 (pl) | 2017-04-06 | 2020-11-02 | Daw Se | Wodne materiały powłokowe |
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DE102017008987A1 (de) * | 2017-09-26 | 2019-03-28 | Sto Se & Co. Kgaa | Lagerstabile Beschichtungszusammensetzung |
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-
2004
- 2004-05-12 DE DE102004023374A patent/DE102004023374A1/de not_active Withdrawn
-
2005
- 2005-05-04 CN CN2005800153735A patent/CN1954039B/zh active Active
- 2005-05-04 AT AT05738118T patent/ATE401378T1/de not_active IP Right Cessation
- 2005-05-04 DE DE502005004738T patent/DE502005004738D1/de active Active
- 2005-05-04 EP EP05738118A patent/EP1749067B1/de active Active
- 2005-05-04 CA CA002562856A patent/CA2562856A1/en not_active Abandoned
- 2005-05-04 WO PCT/EP2005/004826 patent/WO2005111158A1/de active IP Right Grant
- 2005-05-04 US US11/596,507 patent/US7789959B2/en active Active
- 2005-05-04 MX MXPA06013116A patent/MXPA06013116A/es active IP Right Grant
Non-Patent Citations (1)
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See references of WO2005111158A1 * |
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DE502005004738D1 (de) | 2008-08-28 |
EP1749067B1 (de) | 2008-07-16 |
CN1954039A (zh) | 2007-04-25 |
US7789959B2 (en) | 2010-09-07 |
US20080269397A1 (en) | 2008-10-30 |
WO2005111158A1 (de) | 2005-11-24 |
MXPA06013116A (es) | 2007-02-28 |
DE102004023374A1 (de) | 2005-12-08 |
CA2562856A1 (en) | 2005-11-24 |
CN1954039B (zh) | 2011-12-07 |
ATE401378T1 (de) | 2008-08-15 |
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